Electronics and technology blog    /    Materials for January 2021 year

Hello everyone! Let's take another look at a used VeriFone 9V (9.3 V) 4 A power supply. This time, it's model SM09003A. In this review, I'll take a brief detour from the power supply itself and talk a little about other things (what I do at home with power supplies and so on).

Not long ago, I posted a review of the new Fnirsi FNB48 USB tester and mentioned that both a Bluetooth module and software for it were expected. I received the module quite a while ago, but the software only arrived now, just as promised, so today I'm adding to my previous review.

Hello again, everyone, and I wish you good health. This time, I’ll be looking at a VeriFone 9V-4A power supply. This time, model AU1370933g.

Hello everyone, and I wish you good health. Today I decided to write a short post. It’s mainly for fellow power supply enthusiasts like me (I’m no pro). This is about a used VeriFone power supply (9V-4A). Today I’m focusing on model Au-7992n.

The Unit UT181A multimeter has a rather useful feature: a built-in real-time clock. But it turns out there’s a glitch—or, more precisely, a glitch with my particular unit. Someone else may run into the same problem, so today I’ll explain one way to fix it.

While preparing various components to modify my electronic load, I ran into the problem of connecting USB devices and a local network to a tablet with just one USB port. The simplest solution is to use a USB hub, which is what I want to tell you about today.

For that same modification of one of my devices, I wanted some nice buttons—not just any buttons, but ones with backlighting. I found some on AliExpress, ordered them, got them, and put together a review in case they might come in handy for someone.

While modifying yet another device, I needed some frames for assembling battery packs from 32700 cells. I ordered some, received them, and thought, why not put together a short review on the subject?

I was getting tired of replacing the capsule halogen bulbs in my desk lamp. I’d tried both name-brand and no-name ones, and the main difference was brightness. The lamp had also been on for 10–12 hours a day lately, so I decided to save some money and switch to something more modern—and see what was available on the market.

A year ago, I reviewed the LRS-350-24 power supply. Today, here's a brief look at a model from the same series, but with a 48 V output. Since these power supplies differ essentially only in output voltage and current, this review will be short, but I hope it will still be useful.

I recently bought a couple of types of silicone-insulated wire, in 8 and 12 AWG. I hadn't planned to write about them, but I liked the wire so much that I decided to put together a short review after all.